Lesson 3

The Development of US Air Doctrine in the Inter-War Period

Mark Reardon

Seminar 059A

DLO 1: Distinguish the basic concepts of Douhet and Mitchell about the use of airpower in warfare to determine which were later validated and which were not.

Question 1. What were the primary uses of airpower during World War I? How did the use of airpower in the Great War influence the major airpower advocates after the war ended?

Ans. A. The primary uses of airpower during WW I were:

(1) Close air support of the ground troops.

(2) Interdiction.

(3) Bombardment.

(4) Counterair operations.

(5) Artillery Fire Control.

(6) Observation.

(7) Reconnaissance.

Ans. B. During WW I the use of airpower mainly as an auxiliary to ground forces led the airpower advocates (especially Douhet and Mitchell) to several conclusions which caused them to fight for a different use of airpower in the future. Those conclusions were:

(1) That the Air Service should be an independent arm equal to the Army and Navy.

(2) That the primary mission of the Air Service should be strategic, offensive bombing.

(3) That the targets for the Air Service should be the destruction of the enemy’s air force and the enemy’s vital centers.

(4) That command of the air would be the determining factor of future wars.

Question 2. How did Douhet and Mitchell envision airplanes could be used in warfare?

Ans. Both Douhet and Mitchell envisioned airplanes as being the dominant third dimension in future war. They believed that using the Air Service as an offensive, strategic force rather than as an adjunct support for the surface forces would bring decisive victory. Finally, they thought that using the Air Service to attack the enemy’s vital centers (their air force, industry, and populace) would cause the enemy to lose the will to fight and thus bring a quick end to a war.

Question 3. How did General "Billy" Mitchell influence the developments of US airpower doctrine during the inter-war years?

Ans. During the inter-war years Mitchell, through his personal drive, led the fight for modernization of the Air Service; independence of the Air Service from the Army and Navy; and change of doctrine from a defensive ground force oriented force to an offensive, strategic force. In his position as deputy of the Air Service he fought to instill his offensive doctrine upon the instructors at the ACTS. Additionally, he worked to teach the public about airpower and its potential for civilian use and its affordability versus Naval power.

Question 4. On what ideas did Mitchell and Douhet agree and disagree?

Ans. Mitchell and Douhet agreed on the following:

(1) Independence of the Air Service

(2) Strategic, Offensive bombing of the enemy’s vital centers

(3) Air superiority is a must

(4) Defense is a secondary mission of the Air Service

(5) Fighters were essential for protecting bombers.

They disagreed on the following:

(1) Douhet believed that the attack must be on the enemy’s air force while it was still on the ground, while Mitchell believed that the enemy’s air force could be overcome in the air.

(2) Douhet wanted one type of aircraft for all missions while Mitchell thought that the aircraft should fit the missions (i.e. strategic bombers, fighters, and pursuers).

(3) Douhet believed that no air force could protect al of a nation’s vital centers. Mitchell believed that America’s vital centers could be defended by the air service.

Question 5. Which of Douhet’s and Mitchell’s ideas on the use of airpower in war were later validated and which were not?

Ans. Validated:

(1) Offensive bombing of the enemy’s vital centers would affect the outcome of the war.

(2) The mere appearance of airpower could affect the outcome of negotiations before war.

(3) Air superiority is vital to the execution of the war.

(4) The independence of the air service is necessary in order to get maximum value from the investment in the service.

Disproved:

(1) Strategic bombing of a nation’s vital centers will win the war in and of itself.

(2) Ground and Naval forces will become outmoded.

(3) Defense is not a good use of airpower.

DLO 2: Outline the major contributions of the key US airpower enthusiasts, besides Mitchell, who influenced the development of US airpower between the wars.

Question 6. What were the key ideas and concepts in the development of US strategic and tactical airpower doctrine between the two world wars?

Ans. Three trends influenced the period:

(1) The effort to establish an independent air force

(2) The development of a doctrine of strategic bombing

(3) The search for a heavy bomber by which to apply the doctrine.

The argument over the use of the air service as an offensive weapon which the airpower proponents believed or as a defensive adjunct to the surface forces as defended by the traditionalists of the services also played a large part in the development (or lack thereof) of doctrine during this time.

Question 7. How did the officers at the ACTS contribute to the development of US airpower doctrine in the inter-war years?

Ans. The ACTS instructors and administrators developed curriculum which espoused the believes of the airpower advocates as opposed to the directives of the General Staff. Throughout this period the General Staff and the Naval hierarchy thwarted the ideas of the airpower advocates. However, at ACTS they continued to teach the principles of Mitchell and others who advocated the development of the strategic over the tactical and the offensive over the defensive activity. Although the plans were developed in light of an overall use of the air service in a defense of the hemisphere, they advocated the offensive attitude to conduct that defense.

Question 8. In what ways did the air doctrine of the Air Corps in 1941 differ from the views of Mitchell and Douhet?

Ans. First of all, American plans during 1941 were drawn on the premise of cooperation with Britain and her allies against the Axis. This was certainly not envisioned by Mitchell who developed his ideas in an atmosphere of isolationism during the twenties. Secondly, the strategy was developed on a global basis rather than as a defense of the hemisphere or the nation. Other than that the doctrine proposed by the Air Corps in 1941 very closely resembled that of the ACTS and therefore that of both Mitchell and Douhet. It included strategic bombing as its primary strategy and tactical support of the ground forces only as a secondary mission.

Question 9. What were the differing doctrinal views between the ground and air officers in the Army in the 1930s and how did FM 1-5 address those issues in 1940?

Ans. The air officers advocated an independent air force to be used as a strategic offensive weapon to provide a decisive blow of its own. The ground view was that the air service should provide close air support to ground forces and in other ways act as an adjunct to the surface services. FM 1-5 addressed those issues in 1940 by bringing together the varied doctrines into a single posture statement accepted by both sides. The manual represented a considerable attenuation of the air doctrine of the ACTS, conforming it to the mere conservative general principles of airpower. But the FM’s statement of general employment and missions for the Air Corps was moderate, but not contradictory to the dominant viewpoint of the Air Corps as a whole. Given the national strategic defensive position, FM 1-5 call for the kind of doctrine espoused the instructors at the ACTS. FM 1-5 categorized the airpower use into four groupings:

(1) Training and special purpose aviation (noncombatant)

(2) Reconnaissance and liaison (assigned permanently to ground units)

(3) Overseas garrison aviation

(4) GHQ Aviation

DLO 3: Demonstrate how the concepts of strategic bombing doctrine, as developed at the ACTS, influenced subsequent technological developments to provide an aircraft for high altitude, daylight, precision, strategic bombardment.

Question 10. Why did some US Army Air Corps thinkers opt for a doctrinal position like strategic precision bombardment?

Ans. The theory had developed over the years and despite lessons learned from the war in Europe the leaders resisted any change. So convinced were these leaders of the invincibility of bombers that any argument against the doctrine was rationalized or ordered away. Changing the doctrine, they felt, could undermine all the gains they had made over the past two decades.

Question 11. How did strategic bombing doctrine, developed at the ACTS, affect aircraft requirements in the late 1930?

Ans. Throughout the 1930s the doctrine espoused the ACTS was built on strategic bombing. The R&D and other activity sponsored by the school perpetuated the development and building of bombers. In 1938 and 1939 the President also pushed bombers and that increased pressure to build bombers over pursuit or attack aircraft.

Question 12. How did the growing devotion to strategic bombardment doctrine by many US Army Air Corps leader of the late 1930s affect the development of other areas of airpower doctrine?

Ans. The devotion to strategic bombardment led to the neglect of other areas of airpower doctrine. Because the airpower advocates did not believe in the use of either pursuit or attack doctrine and because they believed that both were either useless or superlative they preached against them at ACTS and in other ways denigrated the concepts as viable parts of offensive airpower.

Additional Lesson 3

The Development of US Air Doctrine in the Inter-war Period

Lesson Objective: Analyze the classic air power theories, the thinkers who developed them, and the innovations of the inter-war years that influenced the development of US airpower doctrine in during that period.

Desired Learning Outcomes

1. Distinguish the basic concepts of Douhet and Mitchell about the use of airpower in warfare to determine which ones were later validated and which were not.

Basic Concepts: Douhet

The Medium of Air

Airpower exploits the third dimension (that is, the vertical direction of the sky) in a way that avoids entanglement with ground forces and the terrain itself. It offers unparalleled speed and freedom of action (flexibility).

The Inherently Offensive Nature of Airpower

The offensive is the stronger form of combat in air war (this is a truly radical concept when compared to theories based on ground combat). Effective defense against the airplane is virtually impossible. In a related sense, the concept of exploiting the initiative is central in air warfare. In other words, a good offense is the best (only) defense.

Command of the Air is the Essential Prerequisite to Victory

Because no effective defense exists (air-to-air or surface-to-air) against an air offensive, the only way to protect one’s homeland (and one’s own air force) it is to attack the ground based portion of an enemy air force. Destroying the enemy air force on the ground leaves the skies uncontested and gains command of the air. It is the great enabler. Command of the air has three related elements

 

Airpower can be Decisive in Breaking an Enemy’s National Will to Fight

Airpower can attack directly "vital centers" of the state as can cause an internal breakdown of key elements of society, government, military, and industrial structure. Sufficient damage to (destruction of) a nation’s vital centers would result in a loss popular support to continue the war.

Airpower Should Focus on Strategic Operations

Airpower should conduct intensive offensive counterair operations to gain command of the air, then intensive strategic attacks on to attack enemy vital centers to decide the war. Because airpower can be decisive in strategic attack, support of other services detracts from the nation’s main effort. Aviation resources put to other uses (such as air superiority and CAS) were "useless, superfluous, and harmful.

Airpower Should be Organized as an Independent Armed Service

The independent, strategic nature of airpower suggests it be organized and funded separately from army and navy services. Ground and sea commanders are not trained to employ aircraft effectively, their perspective tends to put aircraft in support of land/sea forces, and funding for air forces should be considered separately from army and navy force structures. An Independent Air Force (IAF) is the best arrangement for nation’s armed forces.

Force Structure

Bombers Rule! Though initially Douhet acknowledges the role of attack and auxiliary aircraft, he arrives at the conclusion that three (eventually two) types of aircraft are required:

Bombing

"Vital centers" and terror bombing suggest urban area targets.

There Should is a Natural, Tight Relationship between Military and Civil Aviation

The government should subsidize and nurture civil aviation as a means of enhancing military aviation.

Basic Concepts: Mitchell

Similarities with Douhet

Mitchell’s view on airpower was similar to Douhet’s in key ways

Differences with Douhet

 

 

Validation and Error (highlighted by readings)

Douhet

Mitchell

1. Outline the major contributions of major airpower enthusiasts, besides Mitchell, who influenced the development of US airpower doctrine between the wars.

3. Use the concepts of strategic bombing doctrine as developed at the Air Corps Tactical School (ACTS) to show how they influenced subsequent technological developments to provide an aircraft for high altitude daylight precision strategic bombing.

Discussion Questions

DLO 1

  1. What were the primary uses of airpower during WWI?

How did the use of airpower in WWI influence the airpower advocates after the war ended?

  1. How did Douhet and Mitchell envision airplanes could be used in warfare?
  1. How did BG Billy Mitchell influence the development of US airpower doctrine?

DLO 2

  1. Who were key contributors to the development of US strategic and tactical airpower doctrine between the two world wars? What were their key ideas and concepts?
  1. How did the airmen at ATCS contribute to the development of US airpower in the inter-war years?
  1. In what ways did the air doctrine of the Air Corps in 1941 differ from the views of Mitchel and Douhet?
  1. What were differing doctrinal views between ground and air officers in the Army in the thirties and how did FM 1-5 address those issues in 1940?

DLO 3

  1. Why did some USAAC thinkers opt for a doctrinal position like precision bombardment?
  1. How did strategic bombing doctrine, developed at the ACTS, affect aircraft requirements in the late 1930’s?
  1. How did the growing devotion to strategic bombardment doctrine by many USAAC leaders of the late 1930’s affect the development of others areas of airpower doctrine?

Attack aviation was neglected doctrinally by ACTS—it was forced in by ground officers